Anterior Thigh

Question 1

Sartorius

Answer 1

Origin: ASIS

Insertion: Anteromedial proximal tibia

Action: Hip flexion, abduction, lateral rotation, knee flexion

Innervation: Femoral nerve (L2, L3)

Question 2

Rectus Femoris

Answer 2

Origin: AIIS and superior to acetabulum

Insertion: Patella via quadriceps tendon and via patella ligament to tibial tubercle

Action: hip flexion, knee extension

Innervation: Femoral nerve (L2-4)

Question 3

Vastus Lateralis

Answer 3

Origin: Lateral intertrochanteric line, linea aspera, greater trochanter, gluteal tuberosity

Insertion: Patella via quadriceps tendon and via patella ligament to tibial tubercle

Action: Knee extension

Innervation: Femoral nerve (L2-4)

Question 4

Vastus Intermedius

Answer 4

Origin: Upper 2/3 of anterolateral femur

Insertion: Patella via quadriceps tendon and via patella ligament to tibial tubercle

Action: Knee extension

Innervation: Femoral nerve (L2-4)

Question 5

Vastus Medialis Longus

Answer 5

Origin: Medial intertrochanteric line and linea aspera, pectineal line and medial supracondylar line

Insertion: Superior border of patella via quadriceps tendon and via patella ligament to tibial tubercle

Action: Knee flexion

Innervation: Femoral nerve (L2-4)

Question 6

Vastus Medialis Obliquus

Answer 6

Origin: Adductor magnus tendon

Insertion: Medial border of patella via quadriceps tendon and via patella ligament to tibial tubercle

Action: Knee extension

Innervation: Femoral nerve (L2-4)